Washable polyester fabric and manufacturing method thereof

Abstract

The invention discloses a washable polyester fabric and a manufacturing method, and relates to the technical field of polyester fabrics. The method comprises the following steps: firstly, adopting Ar / O2 mixed gas plasma treatment to form a micro-nano roughened structure on the surface of polyester, and generating a large number of active groups as physical anchoring points; then, coating a SiO2-polyurethane hybrid coating, and forming a composite structure by utilizing a Si-O-Si network structure of SiO2 nanoparticles to provide hardness and utilizing a polyurethane molecular chain to provide flexibility; and finally, through fluorosilane surface modification treatment, the stability of the coating is further enhanced. After the prepared polyester fabric is subjected to 50 times of standard washing, the water contact angle exceeds 150 degrees, the washing resistance of the fabric is remarkably improved, and the service life of the fabric is remarkably prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polyester fabric, in particular to a wash-resistant polyester fabric and a manufacturing method thereof. BACKGROUND

[0002] Polyester fabric is widely used in clothing, home textiles, industrial textiles and other fields due to its high strength, good elasticity, wear resistance and other advantages. In order to endow the polyester fabric with specific functions such as waterproofness, stain resistance and antibacterial property, a coating finishing method is often used. However, the existing polyester coated fabric generally has the problem of weak bonding force between the coating and the base fabric. After multiple washes, the coating is prone to peeling, resulting in loss of fabric function, poor wash resistance, and seriously affecting the service life and application range of the polyester fabric.

[0003] Traditional coating treatment methods mostly use chemical adhesives or physical coating, which cannot fundamentally solve the problem of interface bonding between the coating and the base fabric. The chemical adhesive may have environmental problems, and as the number of washes increases, the adhesive gradually fails and the coating peels off more severely. The coating formed by physical coating is only a simple physical adhesion to the surface of the base fabric, with low bonding strength and poor wash resistance. Therefore, it is of great practical significance to develop a polyester fabric treatment method that can improve the bonding force between the coating and the polyester base fabric, enhance the wash resistance of the fabric, and is environmentally friendly.

[0004] In summary, the existing technology lacks a solution that effectively integrates hydrophobicity and multiple functions onto a polyester fabric while having excellent wash resistance. The present application aims to provide a novel multifunctional polyester fabric finishing method to solve the technical problems of coating peeling and poor wash resistance. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a wash-resistant polyester fabric and a manufacturing method, which significantly improve the wash-resistant durability. The present application effectively solves the technical problems of coating peeling and poor wash resistance of polyester fabric through multi-scale structure design and surface modification technology, significantly improving the service life and functional stability of the fabric.

[0006] The technical solution of the present application is as follows: A wash-resistant polyester fabric and a manufacturing method thereof, comprising the following steps: S1: Clean the surface of the polyester fabric with anhydrous ethanol to remove oil stains, and dry it at 60℃ for 30 minutes. Fix the polyester fabric on the reactor sample table, and vacuum to 10 -2 Pa or below, introduce Ar and O2 mixed gas with a total flow rate of 50sccm, and perform roughening treatment with the sample temperature controlled at 40℃ or below.

[0007] In Ar / O2 mixed plasma, Ar ions mainly play a physical bombardment role, producing micron-level pits and grooves on the surface of polyester; oxygen atoms and oxygen radicals generated by O2 plasma chemically react with polyester molecules to form polar groups, increase surface energy and improve wettability. The roughened surface increases the specific surface area, forming a mechanical anchoring effect.

[0008] Further, the volume ratio of Ar and O2 is 3:1 to 5:1, and the gas pressure is 15 to 25 Pa.

[0009] Further, the roughening treatment parameters are radio frequency power of 180 to 250 W and treatment time of 8 to 12 minutes.

[0010] S2: SiO2 nanoparticles, polyurethane prepolymer, γ-aminopropyl triethoxysilane coupling agent, and anhydrous ethanol are mixed according to the mass percentage, ultrasonic dispersion is performed for 30 minutes to ensure uniform dispersion of the particles, a polyurethane solution is obtained; then the polyester fabric treated by plasma is immersed in the prepared solution, the immersion time is 45 seconds, it is taken out and left to stand for 5 minutes, part of the solvent is volatilized, and the hybrid coating fabric is prepared by drying in an oven at 100℃ for 20 minutes.

[0011] The isocyanate groups in the polyurethane prepolymer react with the hydroxyl groups on the surface of the polyester to form urethane bonds; the SiO2 particles form Si-O-C bonds with the polyurethane matrix through the coupling agent; and a three-dimensional network structure is formed during the curing process.

[0012] Further, the polyurethane prepolymer is a polybutylene adipate type polyurethane.

[0013] Further, the composition and ratio of the SiO2-polyurethane hybrid coating are as follows: the mass percentage of SiO2 nanoparticles is 4% to 6%, the mass percentage of polyurethane prepolymer is 8% to 12%, the mass percentage of γ-aminopropyl triethoxysilane coupling agent is 0.3% to 0.8%, and the mass percentage of anhydrous ethanol is 81.2% to 87.7%.

[0014] S3: Fluorosilane and anhydrous ethanol are stirred at room temperature for 30 minutes to prepare a fluorosilane solution, then the hybrid coating fabric prepared in step S2 is immersed in the fluorosilane solution for 20 seconds, lifted vertically, and the excess solution is dropped, and finally condensation curing is performed to prepare a wash-resistant polyester fabric.

[0015] The hydrolysis of fluorosilane molecules produces silicon hydroxyl groups, which undergo condensation reaction with the silicon hydroxyl groups on the surface of SiO2 to form Si-O-Si bonds, and the fluoralkyl chains are oriented and arranged on the surface to impart hydrophobic properties.

[0016] Further, the fluorosilane is selected from perfluorooctyl triethoxysilane.

[0017] Further, the fluorosilane solution component and ratio are as follows: perfluorooctyltriethoxysilane mass percentage 0.8% to 1.5%, and anhydrous ethanol mass percentage 98.5% to 99.2%.

[0018] Further, the condensation curing parameter is set as follows: drying temperature 70 to 90 DEG C, and drying time 25 to 35 minutes.

[0019] The present application has the following beneficial effects: 1. The present application has the following beneficial effects:

[0020] 2. The present application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The present application has the following beneficial effects:

[0022] Figure 2 The present application has the following beneficial effects: DETAILED DESCRIPTION

[0023] The following examples further explain and illustrate the technical solutions of the present application. It is particularly pointed out that each specific embodiment is a specific embodiment and explanation of the technical solutions, and should not be regarded as a limitation on the scope of protection of the present application. Those skilled in the art still have the right to modify the technical solutions of these examples, to equivalently replace some or all of the technical features, and these modifications or replacements do not change the essence of the corresponding technical solutions, and do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions described in the present application. As shown in the accompanying drawings, it is a flow chart of a wash-resistant nylon fabric and a manufacturing method, and the detailed preparation steps are as follows: Figure 1 The present application has the following beneficial effects: 1. Plasma micro-nano roughening treatment The terylene fabric is cleaned with anhydrous ethanol to remove surface dirt, and is dried at 60 DEG C for 30 minutes. The terylene fabric is fixed on the reactor sample table, and is vacuumed to 10 -2 Pa, Ar and O2 mixed gas is introduced, the total flow rate is 50 sccm, and the sample temperature is controlled below 40 DEG C.

[0024] The volume ratio of Ar and O2 is 3:1 to 5:1, and the gas preparation pressure is 15 to 25 Pa.

[0025] The roughening treatment parameters are as follows: radio frequency power 180 to 250 W, and treatment time 8 to 12 minutes.

[0026] 2. Preparation of SiO2-polyurethane hybrid coating The SiO2 nanoparticles, polyurethane prepolymer, γ-aminopropyl triethoxysilane coupling agent, and anhydrous ethanol are mixed in mass percentage, ultrasonic dispersion for 30 minutes to ensure uniform dispersion of the particles, to obtain a polyurethane solution; then the polyester fabric treated by plasma is immersed in the prepared solution, the immersion time is 45 seconds, and the fabric is taken out and placed for 5 minutes to allow part of the solvent to volatilize, and then the fabric is dried in an oven at 100°C for 20 minutes to obtain a hybrid coating fabric.

[0027] The polyurethane prepolymer is a polybutylene adipate type polyurethane.

[0028] The composition and ratio of the SiO2-polyurethane hybrid coating are as follows: the mass percentage of SiO2 nanoparticles is 4% to 6%, the mass percentage of polyurethane prepolymer is 8% to 12%, the mass percentage of γ-aminopropyl triethoxysilane coupling agent is 0.3% to 0.8%, and the mass percentage of anhydrous ethanol is 81.2% to 87.7%.

[0029] 3. Fluorosilane surface modification The fluorosilane and anhydrous ethanol are stirred at room temperature for hydrolysis for 30 minutes to prepare a fluorosilane solution, then the hybrid coating fabric prepared in step S2 is immersed in the fluorosilane solution for 20 seconds, lifted vertically, and the excess solution is dropped, and finally condensation curing is performed to prepare a wash-resistant polyester fabric.

[0030] The fluorosilane is selected from perfluorooctyl triethoxysilane.

[0031] The composition and ratio of the fluorosilane solution are as follows: the mass percentage of perfluorooctyl triethoxysilane is 0.8% to 1.5%, and the mass percentage of anhydrous ethanol is 98.5% to 99.2%.

[0032] The condensation curing parameters are set as follows: the drying temperature is 70 to 90°C, and the drying time is 25 to 35 minutes.

[0033] Example 1 A wash-resistant polyester fabric and a manufacturing method thereof, the detailed preparation steps are as follows: S1: The polyester fabric is cleaned with anhydrous ethanol to remove surface dirt, and then dried at 60°C for 30 minutes. The polyester fabric is fixed on the sample table of the reactor, and vacuumed to 10 -2 Pa, Ar and O2 mixed gas is introduced, the total flow rate is 50 sccm, and the roughening treatment is performed, and the sample temperature is controlled below 40°C.

[0034] The volume ratio of Ar and O2 is 4:1, and the gas preparation pressure is 20 Pa.

[0035] The roughening treatment parameters are radio frequency power 200 W and treatment time 10 minutes.

[0036] S2: SiO2 nanoparticles, polybutylene adipate-type polyurethane, γ-aminopropyl triethoxysilane coupling agent, and anhydrous ethanol are mixed according to the mass percentage, ultrasonic dispersion is performed for 30 minutes to ensure uniform dispersion of the particles, to obtain a polyurethane solution; then the polyester fabric subjected to plasma treatment is immersed in the prepared solution, the immersion time is 45 seconds, it is taken out and left to stand for 5 minutes, the solvent is partially volatilized, and the hybrid coating fabric is prepared by drying in an oven at 100℃ for 20 minutes.

[0037] The SiO2-polyurethane hybrid coating composition and ratio are as follows: the mass percentage of SiO2 nanoparticles is 5%, the mass percentage of polybutylene adipate-type polyurethane is 10%, the mass percentage of γ-aminopropyl triethoxysilane coupling agent is 0.5%, and the mass percentage of anhydrous ethanol is 84.5%.

[0038] S3: perfluorooctyl triethoxysilane and anhydrous ethanol are stirred at room temperature for hydrolysis for 30 minutes to prepare a fluorosilane solution, then the hybrid coating fabric prepared in the S2 step is immersed in the fluorosilane solution for 20 seconds, it is vertically lifted, the excess solution is dropped, and finally condensation curing is performed to prepare a wash-resistant polyester fabric.

[0039] The fluorosilane solution composition and ratio are as follows: the mass percentage of perfluorooctyl triethoxysilane is 1%, and the mass percentage of anhydrous ethanol is 99%.

[0040] The condensation curing parameters are set as follows: the drying temperature is 80℃, and the drying time is 30 minutes.

[0041] Example 2 A wash-resistant polyester fabric and a manufacturing method thereof, the detailed preparation steps of which are as follows: Referring to the wash-resistant polyester fabric and the manufacturing method thereof of Example 1, the difference is that, In the S1 step of the preparation process, the volume ratio of Ar and O2 is 3:1, and the gas preparation pressure is 25 Pa. The roughening treatment parameters are radio frequency power 250 W and treatment time 12 minutes.

[0042] In the S2 step of the preparation process, the SiO2-polyurethane hybrid coating composition and ratio are as follows: the mass percentage of SiO2 nanoparticles is 6%, the mass percentage of polybutylene adipate-type polyurethane is 12%, the mass percentage of γ-aminopropyl triethoxysilane coupling agent is 0.8%, and the mass percentage of anhydrous ethanol is 81.2%.

[0043] In the S3 step of the preparation process, the composition and ratio of the fluoro-silane solution are as follows: perfluorooctyltriethoxysilane 1.5% by mass, anhydrous ethanol 98.5% by mass. The condensation curing parameters are set as follows: drying temperature 90°C, drying time 35 minutes.

[0044] Example 3 A washable nylon fabric and a method of making the same, the detailed preparation steps are as follows: Referring to the washable nylon fabric and the method of making the same of Example 1, the difference is that, In the S1 step of the preparation process, the volume ratio of Ar and O2 is 5:1, and the gas preparation pressure is 15 Pa. The roughening treatment parameters are as follows: radio frequency power 180 W, treatment time 8 minutes.

[0045] In the S2 step of the preparation process, the composition and ratio of the SiO2-polyurethane hybrid coating are as follows: SiO2 nanoparticles 4% by mass, polybutylene adipate polyurethane 8% by mass, γ-aminopropyltriethoxysilane coupling agent 0.3% by mass, and anhydrous ethanol 87.7% by mass.

[0046] In the S3 step of the preparation process, the composition and ratio of the fluoro-silane solution are as follows: perfluorooctyltriethoxysilane 0.8% by mass, and anhydrous ethanol 98.5% by mass. The condensation curing parameters are set as follows: drying temperature 70°C, and drying time 25 minutes.

[0047] Comparative Example 1 Referring to the washable nylon fabric and the method of making the same of Example 1, the difference is that, in the plasma micro-nano roughening treatment, only pure Ar gas is used for treatment. The remaining steps are the same.

[0048] Comparative Example 2 Referring to the washable nylon fabric and the method of making the same of Example 1, the difference is that, the hybrid coating does not add SiO2 particles, and the polybutylene adipate polyurethane is set to 15% by mass, the γ-aminopropyltriethoxysilane coupling agent is set to 0.5% by mass, and the anhydrous ethanol is set to 84.5% by mass. The remaining steps are the same.

[0049] Comparative Example 3 Referring to the washable nylon fabric and the method of making the same of Example 1, the difference is that, the fluoro-silane modification step is not performed. The remaining steps are the same.

[0050] A washable polyester fabric and a manufacturing method thereof are comprehensively implemented according to examples 1-3 and comparative examples 1-3, and the comprehensive performance of the polyester fabric is compared. The water contact angle is tested according to the standard GB / T 42694-2023 "determination and evaluation of the surface water resistance of textiles-contact angle and roll angle method", the smaller the water contact angle, the worse the ability of the polyester fabric to keep water repellency, and the worse the wash resistance. The specific test comparison results are shown in Table 1, and the water contact angle of the fabric is shown in FIG. 1. Figure 2 Table 1: Comparison of comprehensive performance of examples 1-3 and comparative examples 1-3 From the above comparison results, it can be seen that in comparative example 1, only Ar gas is used for plasma micro-nano roughening treatment, and compared with example 1, the water contact angle after washing is lower, indicating that Ar / O2 mixed gas treatment is better than single Ar gas treatment; in comparative example 2, a single polyurethane coating is used, resulting in a significant decrease in water contact angle after washing, indicating that the hybrid coating can improve the washability of the fabric; in comparative example 3, the fluorosilane modification step is missing, and the water contact angle after washing decreases significantly, proving the important role of surface modification in improving the stability of the coating.​

Claims

1. A method for manufacturing a washable synthetic fabric, characterized in that, Includes the following steps: S1: Clean the surface oil stains of the polyester fabric with anhydrous ethanol, dry it at 60℃ for 30 minutes, fix the polyester fabric on the reactor sample stage, and evacuate to 10℃. -2 For roughening treatment, a mixture of Ar and O2 gas is introduced at a total flow rate of 50 sccm and the temperature is controlled below 40℃. S2: SiO2 nanoparticles, polyurethane prepolymer, γ-aminopropyltriethoxysilane coupling agent, and anhydrous ethanol are mixed according to the mass percentage and ultrasonically dispersed for 30 minutes to ensure uniform dispersion of the particles, thus obtaining a polyurethane solution; then, the polyester fabric roughened in step S1 is immersed in the polyurethane solution for 45 seconds, removed and left to stand for 5 minutes to allow partial evaporation of the solvent, and then dried to prepare the hybrid coated fabric. S3: Hydrolyze fluorosilane with anhydrous ethanol at room temperature for 30 minutes to prepare a fluorosilane solution. Then, immerse the hybrid coated fabric prepared in step S2 in the fluorosilane solution for 20 seconds, lift it vertically, drip off the excess solution, and finally perform condensation curing to prepare a washable nylon fabric.

2. The method for manufacturing a washable nylon fabric according to claim 1, characterized in that, The Ar and O2 in S1 have a volume ratio of 3:1 to 5:1, and the gas pressure is 15 to 25 Pa.

3. The method for manufacturing a washable nylon fabric according to claim 1, characterized in that, The roughening process described in S1 has the following parameters: RF power 180-250W, processing time 8-12 minutes.

4. The method for manufacturing a washable nylon fabric according to claim 1, characterized in that, The drying process described in S2 has the following parameters: temperature 100℃, drying time 20 minutes.

5. The method for manufacturing a washable nylon fabric according to claim 1, characterized in that, The polyurethane prepolymer described in S2 is selected as polybutylene adipate type polyurethane.

6. The method for manufacturing a washable nylon fabric according to claim 1, characterized in that, The SiO2-polyurethane hybrid coating described in S2 has the following composition and proportions: 4%–6% by mass of SiO2 nanoparticles, 8%–12% by mass of polyurethane prepolymer, 0.3%–0.8% by mass of γ-aminopropyltriethoxysilane coupling agent, and 81.2%–87.7% by mass of anhydrous ethanol.

7. The method for manufacturing a washable nylon fabric according to claim 1, characterized in that, The fluorosilane described in S3 is perfluorooctyltriethoxysilane.

8. The method for manufacturing a washable nylon fabric according to claim 1, characterized in that, The fluorosilane solution described in S3 has the following composition and ratio: perfluorooctyltriethoxysilane by mass percentage 0.8% to 1.5%, and anhydrous ethanol by mass percentage 98.5% to 99.2%.

9. The method for manufacturing a washable nylon fabric according to claim 1, characterized in that, The condensation curing described in S3 has the following parameters: drying temperature of 70-90℃ and drying time of 25-35 minutes.

10. A washable nylon fabric prepared by the preparation method according to any one of claims 1-9, characterized in that, The washable nylon fabric can achieve a contact angle of over 150° after 50 washes.

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